return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCOO (formate neutral radical)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-188.905478
Energy at 298.15K-188.906742
HF Energy-188.905478
Nuclear repulsion energy63.014851
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 2959 2942 57.75      
2 A' 1449 1441 56.97      
3 A' 1362 1354 3.95      
4 A' 1219 1212 41.45      
5 A' 630 627 23.12      
6 A" 995 990 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 4307.0 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 4282.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/cc-pVDZ
ABC
2.46119 0.47190 0.39598

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.437 0.000
H2 -0.001 1.555 0.000
O3 -1.057 -0.261 0.000
O4 1.057 -0.261 0.000

Atom - Atom Distances (Å)
  C1 H2 O3 O4
C11.11781.26611.2664
H21.11782.10002.1012
O31.26612.10002.1135
O41.26642.10122.1135

picture of formate neutral radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 O3 123.379 H2 C1 O4 123.486
O3 C1 O4 113.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.211      
2 H 0.027      
3 O -0.119      
4 O -0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.001 2.043 0.000 2.043
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.094 -0.001 0.000
y -0.001 -14.632 0.000
z 0.000 0.000 -15.766
Traceless
 xyz
x -2.895 -0.001 0.000
y -0.001 2.298 0.000
z 0.000 0.000 0.597
Polar
3z2-r21.195
x2-y2-3.462
xy-0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.180 -0.001 0.000
y -0.001 2.431 0.000
z 0.000 0.000 1.330


<r2> (average value of r2) Å2
<r2> 32.613
(<r2>)1/2 5.711